Errors or packet loss? Something rate limiting multicast? Has someone
recently changed MTUs? I don't know if RouterOS will even log OSPF MTU
mismatches. Never tried it. If the IP/L3 MTUs don't match, then OSPF is
not gonna have a good time. OSPF relies on IP since there is no native
fragmentation in the protocol.
As far as NTP and/or accurate time, I haven't experienced any issues
with that in regards to OSPF. I discovered a router where the NTP
process appeared to have crashed and the clock was off by like 10
minutes. OSPF was humming along with two neighbors for months and a
third for hours because the adjacent router was rebooted.
On 7/5/2017 7:20 PM, Darin Steffl wrote:
I also recommend only using bug fix release for mikrotik. Also make
sure you have clocks synced to an ntp source on every mikrotik router
and that it's accurate.
On Wed, Jul 5, 2017 at 7:09 PM Jason McKemie
<[email protected]
<mailto:[email protected]>> wrote:
Thanks. I'll try 6.38.7 tonight.
There haven't been many changes to the network, and every is
pingable. I did add one static route for a Baicells eNB a week or
two ago, but the problem cropped up more recently. I'll have to
look into that a bit more.
On Wed, Jul 5, 2017 at 6:59 PM, Chris Wright <[email protected]
<mailto:[email protected]>> wrote:
I recommend sticking to the Bugfix releases (currently 6.38.7).
Did anything happen recently that could possibly have provoked
the disappearance like a VLAN or other L2/L3 change? Are the
neighbors pingable on their backbone IPs?
Chris Wright
Network Administrator
*From:*Af [mailto:[email protected]
<mailto:[email protected]>] *On Behalf Of *Jason McKemie
*Sent:* Wednesday, July 05, 2017 4:53 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* [AFMUG] Mikrotik OSPF
Has anyone seen issues with Mikrotik OSPF neighbors just
disappearing for no apparent reason? All of my links are ok,
but I OSPF just isn't picking anything up on one of them. I
might try upgrading both of the Mikrotiks involved, this feels
like a bug. I have 6.38.5 on one end and 6.38 on the other,
both CCR's.
--
Darin Steffl
Minnesota WiFi
www.mnwifi.com <http://www.mnwifi.com/>
507-634-WiFi
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